Sorry guys, I have to take the blame for letting this slip. I have
been working with the VM folks on some comprehensive changes to the
way ZFS works with the VM system (still a ways out I'm afraid), and
let this bug slip into the background.
I'm afraid its probably too late to get this into the Update 2 release,
but I will try to get this into a patch.
-Mark
Joe Little wrote:
I'll add to that concern. One of our to-be-deployed ZFS NAS boxes has
to be a quad-xeon based system of the 32 bit variety. Sadly, I can't
update that to new hardware because of specific project funding
sources.
On 4/28/06, Robert Milkowski <[EMAIL PROTECTED]> wrote:
Hello Jürgen,
Friday, April 28, 2006, 11:26:31 AM, you wrote:
>> However there's still not fixed problem on 32bit platforms with memory
>> starving by ZFS (or is it fixed already?).
JK> If that is:
JK> Bug 6397610: ARC cache performance problems, on 32-bit x86 kernel
JK> and 6398177: zfs: poor nightly build performance in 32-bit mode
(high disk activity)
That's it.
JK> I've been using the following patch for a few weeks now, and the
problem is gone:
JK> diff -ru ../opensolaris-20060417/usr/src/uts/common/fs/zfs/arc.c
usr/src/uts/common/fs/zfs/arc.c
JK> --- ../opensolaris-20060417/usr/src/uts/common/fs/zfs/arc.c
JK> 2006-04-18 15:58:12.000000000 +0200
JK> +++ usr/src/uts/common/fs/zfs/arc.c 2006-04-19
12:28:40.475685026 +0200
JK> @@ -1212,6 +1212,11 @@
JK> * up too much memory.
JK> */
JK> dnlc_reduce_cache((void
*)(uintptr_t)arc_reduce_dnlc_percent);
JK> +
JK> + /*
JK> + * Reclaim unused memory from all kmem caches.
JK> + */
JK> + kmem_reap();
JK> #endif
JK> /*
JK>
JK>
I vaguely remember you were proposing that solution however there must
be good reason it wasn't accepted. I don't know but it looks like U2
on x86/32bit will not have this fixed, at least not at the beginning.
Or maybe it is the solution and you just need to ping ZFS team.
It would be good if this will be fixed before U2 so people on
x86/32bit won't loudly complain about ZFS.
--
Best regards,
Robert mailto:[EMAIL PROTECTED]
http://milek.blogspot.com
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